WWII Button???

I was at my parents, who live next to my grandparents old house today, and decided to detect a little. I hit around their old porch. Out of 6 holes, I found 2 wheats, a 39 and 50something, a 70s penny, an old nail, a piece of copper pipe, and then this...




I'm pretty sure it's a WWII Army Button??? Can someone confirm???

The cool part of the story is, my grandfather server in the Army in WWII, so there is a very good chance it was his...